43 lines
977 B
C
43 lines
977 B
C
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/*
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* Copyright (c) Hunan Goke,Chengdu Goke,Shandong Goke. 2021. All rights reserved.
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*/
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#include "ddr_training_custom.h"
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#define UART_PL01x_DR 0x00 /* Data read or written from the interface. */
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#define UART_PL01x_FR 0x18 /* Flag register (Read only). */
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#define UART_PL01x_FR_TXFF 0x20
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#define IO_WRITE(addr, val) (*(volatile unsigned int *)(addr) = (val))
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#define IO_READ(addr) (*(volatile unsigned int *)(addr))
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void uart_early_putc(const char c)
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{
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/* Wait until there is space in the FIFO */
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while (IO_READ (DDR_REG_BASE_UART0 + UART_PL01x_FR) & UART_PL01x_FR_TXFF);
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/* Send the character */
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IO_WRITE (DDR_REG_BASE_UART0 + UART_PL01x_DR, c);
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}
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void uart_early_puts(const char *s)
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{
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while (*s)
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uart_early_putc (*s++);
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}
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void uart_early_put_hex(const unsigned int hex)
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{
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int i;
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char c;
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for (i = 28; i >= 0; i -= 4) {
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c = (hex >> (unsigned int)i) & 0x0F;
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if (c < 10)
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c += '0';
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else
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c += 'A' - 10;
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uart_early_putc(c);
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}
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}
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